Mathematics, 18.08.2019 23:30 soccer816

Fifty pounds of a cement-and-sand mixture is 40% sand.
how many pounds of sand must be added for the resulting mixture to be 60% sand?

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Fifty pounds of a cement-and-sand mixture is 40% sand.
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Fifty pounds of a cement-and-sand mixture is 40% sand. how many pounds of sand must be added for the resulting mixture to be 60% sand?

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Fifty pounds of a cement-and-sand mixture is 40% sand.
how many pounds of sand must be added for the resulting mixture to be 60% sand?